The EIGRP process is identified by an autonomous system number. If the autonomous system numbers are the same within the routing domain, the routers will be able to exchange information. Otherwise, if the autonomous system numbers do not match then the routers will not be able to exchange information.
To Enable EIGRP the following command needs to be entered
Router (config) #
router eigrp autonomous-system-number
ie router eigrp 10
Next the network need to inputted
Router (config) #
network network number [wildcard mask]
i.e network 172.16.0.0 0.0.0.255
network 172.16.1.0 0.0.0.255
*A wildcard mask is used to connect a router to external router which is outside the autonomous system.
Next the bandwidth need to be set up. By default it is set at the speed of T1
If there are serial links then the bandwidth needs to be set up. The bandwidth is measure in kbps.
Router (config) #
bandwidth kilobytes
EIGRP default route can be enabled with the following command.
ip default-network ip address
Troubleshooting.
show – the show command can be used to trouble shoot
show ip eigrp neighbors
This command shows you if the neighbors within the routers are recognized
show ip route eigrp
shows all EIGRP routes
show ip protocols
shows all dynamic routing protocols enabled on the router
show ip eigrp interfaces
Thie command shows all the interfaces configured for EIGRP.
Fast Ethernet
Fa0/0
Serial
S0/0
show ip eigrp topology
This shows the status of the network.
P (passive) – Network is available
A(active) - Network is not available
U(update) Network is being updated
Q(Query) Requesting information from a neighbor
R(reply) Got a reply or needs a reply
S(struck in active status) There is a problem with the network
show ip eigrp traffic
To see if the packets are sent or received
For more options you can put a question mark after the show command
show ?
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